| http://www.w3.org/ns/prov#value | - The operation of the restricted-access system 10 in a network may be understood by the exemplary case in which the access channel 16 includes a packet-switched data network, such as the Internet or another IP network, the system 10 operates a restricted-access Web site, and the confirmation channel 18 includes mobile telecommunications network with a text messaging function, such as SMS messaging.
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